I donâ€™t really understand your question. Are you looking for a specific type of flower that has a white star in a blue circle that can be grown for ground cover? Maybe a type of vine like Clematis or Passion flowers? There are all kinds of annuals or perennials.

"Passion" does not refer to love, but to the Passion of Christ on the cross. In the 15th and 16th centuries, Spanish Christian missionaries discovered this flower and adopted its unique physical structures as symbols of Crucifixion. For example: the 72 radial filaments (or corona) represent the Crown of Thorns. The ten petals and sepals represent the ten faithful apostles. The top 3 stigmata represent the 3 nails and the lower 5 anthers represent the 5 wounds. The flower has been given names related to this symbolism throughout Europe since that time. In Spain, it is known as Espina de Cristo (Christ's Thorn). In Germany it was once known as Muttergottes-Schuzchen (Mother-of-God's Star).

In Israel they are referred to as clock-flower (שעונית). In Japan, they are known as clock-faced flowers, and recently have become a symbol for homosexual youths.

In North America they are also called the Maypop, the water lemon, and the wild apricot (after its fruit). Native Americans in the Tennessee area called it ocoee, and the Ocoee River and valley are named after it.

Any chance that you can remember what time of year it was? I was just wondering if it might possibly be a spring flowering bulb.
I realise that you have already said it isn't this, however a different angle and a different picture have been known to help.See......